Urban Gorilla might be able to make a Hummer style kit for the Full size Blazer's shorter wheelbase, but not sure on that. You would be better off getting a standard cab, short bed C1500 since they won't have to make a custom backend.Urban Gorilla makes kits for 120" wheelbase (std cab, short bed) Fords, Chevy's, and Dodge's. And they can even make kits for 138" wheelbases (Std. cab long bed, or ext. cab short bed) same makes. But it will have to be a 1/2-ton truck (F-150 or 1500 series). http://www.urbgorilla.com/
Catvee also makes kits that are all aluminum instead of steel and fiberglass like the Urban Gorilla kits. They only build them for Chevy trucks and can be used on either a 1/2 or a 3/4 ton truck. They are also only for 120" wheelbases. http://www.catvee.com
If you can get a hold of a 3/4 ton chevy truck (2500 series) then go for the catvee kit. They are more expensive but much better in the long run. If not go for the urban gorilla. Also the Urban Gorilla is avaliable in 4-door hard top, 4-door soft top, wagon, and slantback bodys. The Catvee is avaliable in 2-door hard top, 4-door hard top, and wagon.
Tatonga and Jurrasic Truck Corporation also offer Hummer kits for Full size trucks. But im not as familar with those as the Catvee and Urban Gorilla.
Also there is a kit by Fibertech called the J-7 for Jeeps.
All of this can be found in the Turnkey section of this site.
Hope this info helps.
Only Little Boys Wear Bowties
Dream Car:
2005 Ford GT
SHM 5.4L HiPo Aluminum Block, Stage III ported DOHC heads, custom internals, intake, and cams
Turbodepot Twin Turbo Kit
Weismann 7-speed Transaxle
2500hp Ford GT
SCARRY...BUT SWEET